Skout Skout Epoch Share and Discussion
- Thread starter Lewis
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I'm not sure if the Leshy I've tested was a 1 or a 2. Regardless, it was a .22 caliber short barrel gun and I found it remarkably accurate despite having the worst trigger on a pcp I've ever experienced. A 6lb hunting trigger I'm told is not unusual and not being a hunter, I'll take the word of those with far greater knowledge and experience in that discipline. However, I am a very experienced bench shooter and for me, despite the guns obvious capabilities, it's trigger alone made it a complete non-starter.
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We have the Carry Sling situation figured out. Have a sling stud adapter for the bottle clamp Pic rail on order & made one at the rear.
* There are four drilled and tapped 1/4-20 holes on bottom of butt area. Using a SS cap screw, drilled a cross hole, flattened both sides and a Uncle Mikes sling swivel snaps right on.
* There are four drilled and tapped 1/4-20 holes on bottom of butt area. Using a SS cap screw, drilled a cross hole, flattened both sides and a Uncle Mikes sling swivel snaps right on.
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You can always tell a @Motorhead gun by the non skid on the bottle or tube….Getting rigging sorted out after a few optics, mounts trials. The small contrasting color Do-Dads break up the boring black
View attachment 344025
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Getting rigging sorted out after a few optics, mounts trials. The small contrasting color Do-Dads break up the boring black
View attachment 344025
Have you tried the 25" barrel yet? I believe that's what I'll be shooting at N.A.C.
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Will the Skout shooters be shooting the JSB 44.75 in .30 caliber? Benchrest only, or will you guys be shooting PRS also?
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Not yet ... been focused on internal tweaks and tune .. not had time or Weather to chase much more.
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I don't know what others will be shooting, but as the .25 cal continues to frustrate all of our efforts to date, I'm going to be using the .30 cal JSB 44.75s with the 25" (-) barrel at around 909 fps which is right at 1200psi on the reg.
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I’m really glad you’re going to be shooting the 44.75 Grain .30 Caliber pellets. It seems like every other Influencer or Tuber has their stash of the new 56 grain ZAN .30 pellets. That induces two variables and makes it really hard to discern the Epoch’s performance. That is aside from the fact that almost every major tournament requires “commercially available mass produced” ammo, and the ZANs are not yet available to real people just yet and shouldn’t be legal at NAC…
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Doing the math ( area calculations ) opening up the vent from the OEM .035" just .002" to .037" yielded an @ 10% larger hole. ( yes I did this )
Pressure for equal speed needed to be bumped up @ 25-35 psi. Shot cycle is sounding much crisper telling of a shorter dwell
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Most excellent!
Do you intend to keep going to see if there is a pint of diminishing return?
Do you intend to keep going to see if there is a pint of diminishing return?
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Not until such time as I try a few more little tweaks ... and some replacement parts to get back to OEM if needed.
being my base line tune is 44.75's @ 900 fps the testing and tweaks thus far are showing a tightening of ES / SD which were very good prior, now a tad better.
Problem known showing it's ugly effects are around the corner if the bleed / vent hole is made even larger. That of Heavier pellets or snugger chambered slugs creating MORE in throat / transfer back pressure and causing spool to shut faster & thus not having the sufficient dwell for higher output.
Going to smaller calibers will also have a somewhat similar choking effect of outflow threw the throat. So .... at this juncture I need to proof that gains in efficiency due too reduced dwell are not already eating into the power potential
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That dwell setting is simple in what it does, to release LP air against the spool piston and screw in seal collar, which changes the pressure differential within the valve sealed piston area causing spool to shift position opening poppet / seat interface.
The Dwell settings is simply HOW LONG this LP air is delivered. Understanding that as HP air fills the valves throat / transfer there will be a RISE in pressure via bleed hole ( spoken of above ) on opposing side of piston, that once equal to the LP that opened it, will cancel that effect. Further rises in HP on the backside of piston will start to forcefully shift the spool to close.
* The electronic dwell controls TIME ... The LP regulator controls the FORCE ( Pressure )
There is an overlap of both effects and in my experience with other valves using similar closing techniques, Stronger one effect becomes, it will near equally take effect away from the other.
In other words ... if vent gets bigger allowing HP to counter the LP effect in opening poppet quicker, less so will the LP be able to keep the valve open.
If vent is smaller, slower will the HP rise and the LP will have a tad more effect to keep the valve open.
This is where LP reg setting becomes even more important, higher LP pressure will stall the effect of closing time slightly and can be a tune parameter given vent gets excessively large. Not enough LP or electronic dwell and valve either chirps or does not open at all.
My take on it ... nothing more or less
Ying Yang going on for sure !!
The Dwell settings is simply HOW LONG this LP air is delivered. Understanding that as HP air fills the valves throat / transfer there will be a RISE in pressure via bleed hole ( spoken of above ) on opposing side of piston, that once equal to the LP that opened it, will cancel that effect. Further rises in HP on the backside of piston will start to forcefully shift the spool to close.
* The electronic dwell controls TIME ... The LP regulator controls the FORCE ( Pressure )
There is an overlap of both effects and in my experience with other valves using similar closing techniques, Stronger one effect becomes, it will near equally take effect away from the other.
In other words ... if vent gets bigger allowing HP to counter the LP effect in opening poppet quicker, less so will the LP be able to keep the valve open.
If vent is smaller, slower will the HP rise and the LP will have a tad more effect to keep the valve open.
This is where LP reg setting becomes even more important, higher LP pressure will stall the effect of closing time slightly and can be a tune parameter given vent gets excessively large. Not enough LP or electronic dwell and valve either chirps or does not open at all.
My take on it ... nothing more or less
Ying Yang going on for sure !!
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The EPOCH has no hammer. It employs a pneumatic balanced valve which opens and closes via tiny changes in pressure.
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This is all excellent information. The more we learn about this system the more we will be able to customize the results to our individual needs.
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I did not intend to imply the Epoch uses a hammer, only that the valve behaves differently from most other current mechanically and electronically controlled valves.
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That dwell setting is simple in what it does, to release LP air against the spool piston and screw in seal collar, which changes the pressure differential within the valve sealed piston area causing spool to shift position opening poppet / seat interface.
The Dwell settings is simply HOW LONG this LP air is delivered. Understanding that as HP air fills the valves throat / transfer there will be a RISE in pressure via bleed hole ( spoken of above ) on opposing side of piston, that once equal to the LP that opened it, will cancel that effect. Further rises in HP on the backside of piston will start to forcefully shift the spool to close.
* The electronic dwell controls TIME ... The LP regulator controls the FORCE ( Pressure )
There is an overlap of both effects and in my experience with other valves using similar closing techniques, Stronger one effect becomes, it will near equally take effect away from the other.
In other words ... if vent gets bigger allowing HP to counter the LP effect in opening poppet quicker, less so will the LP be able to keep the valve open.
If vent is smaller, slower will the HP rise and the LP will have a tad more effect to keep the valve open.
This is where LP reg setting becomes even more important, higher LP pressure will stall the effect of closing time slightly and can be a tune parameter given vent gets excessively large. Not enough LP or electronic dwell and valve either chirps or does not open at all.
My take on it ... nothing more or less
Ying Yang going on for sure !!
Thanks for the detailed response! I’ll re-read after some more Java.
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